AD 47-50-13
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Tarver Propellers, LLC | F200 | DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers |
| propeller | Tarver Propellers, LLC | F200 | DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers |
Unsafe Condition
Hub barrel and mounting tube weld joints and areas beneath balancing bands may have line cracks or fractures.
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Required Actions
Remove balancing bands from both ends of hub barrel, examine hub surfaces for line cracks or fractures in specified areas, and remove defective hubs from service.
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Compliance Time
no later than the next 25-hour propeller lubrication and at 25 hours of operation thereafter
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Affected Aircraft
Tarver Propellers, LLC Model F200 propellers equipped on aircraft with Koppers Model Aeromatic F200 propellers.
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Federal Register Abstract
Hub
Applicability Source Text
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AD Final Rules - DRS_47-50-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-50-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers Subject: Hub Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Tarver Propellers, LLC Model: F200 Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-50-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-50-13 SUBJECT HEADING: DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-50-13 DOWNER (BELLANCA and UNIVERSAL (Stinson): Applies Only to Aircraft Equipped With Koppers Model Aeromatic F200 Propellers. Compliance required no later than the next 25-hour propeller lubrication and at 25 hours of operation thereafter. Inspect propeller hub as follows: Remove balancing band from both ends of hub barrel after index marking each to facilitate proper reassembly. Examine the other surfaces of the hub completely for indications of line cracks or fractures. The areas of primary concern are (1) those beneath the balancing bands, (2) the weld joint where hub barrel and mounting tube meet, and (3) the weld joint where mounting tube and mounting flange meet. Defective hubs should be removed from service. (Koppers Service Bulletin No. 12, dated October 9, 1947, covers this same subject.) FOOTER:
Document Text
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AD Final Rules - DRS_47-50-13.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-50-13 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers Subject: Hub Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Tarver Propellers, LLC Model: F200 Product Type: Propeller Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-50-13 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-50-13 SUBJECT HEADING: DOWNER (BELLANCA and UNIVERSAL (Stinson) Model Aeromatic F200 Propellers ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-50-13 DOWNER (BELLANCA and UNIVERSAL (Stinson): Applies Only to Aircraft Equipped With Koppers Model Aeromatic F200 Propellers. Compliance required no later than the next 25-hour propeller lubrication and at 25 hours of operation thereafter. Inspect propeller hub as follows: Remove balancing band from both ends of hub barrel after index marking each to facilitate proper reassembly. Examine the other surfaces of the hub completely for indications of line cracks or fractures. The areas of primary concern are (1) those beneath the balancing bands, (2) the weld joint where hub barrel and mounting tube meet, and (3) the weld joint where mounting tube and mounting flange meet. Defective hubs should be removed from service. (Koppers Service Bulletin No. 12, dated October 9, 1947, covers this same subject.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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